Commit | Line | Data |
---|---|---|
1a0adaf3 HV |
1 | /* |
2 | file operation functions | |
3 | Copyright (C) 2003-2004 Kevin Thayer <nufan_wfk at yahoo.com> | |
4 | Copyright (C) 2004 Chris Kennedy <c@groovy.org> | |
5 | Copyright (C) 2005-2007 Hans Verkuil <hverkuil@xs4all.nl> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | ||
22 | #include "ivtv-driver.h" | |
23 | #include "ivtv-fileops.h" | |
24 | #include "ivtv-i2c.h" | |
25 | #include "ivtv-queue.h" | |
26 | #include "ivtv-udma.h" | |
27 | #include "ivtv-irq.h" | |
28 | #include "ivtv-vbi.h" | |
29 | #include "ivtv-mailbox.h" | |
33c0fcad | 30 | #include "ivtv-routing.h" |
1a0adaf3 HV |
31 | #include "ivtv-streams.h" |
32 | #include "ivtv-yuv.h" | |
1a0adaf3 | 33 | #include "ivtv-ioctl.h" |
f2100d82 | 34 | #include "ivtv-cards.h" |
914610e8 | 35 | #include "ivtv-firmware.h" |
09250193 | 36 | #include <media/v4l2-event.h> |
b5dcee22 | 37 | #include <media/i2c/saa7115.h> |
1a0adaf3 HV |
38 | |
39 | /* This function tries to claim the stream for a specific file descriptor. | |
40 | If no one else is using this stream then the stream is claimed and | |
41 | associated VBI streams are also automatically claimed. | |
42 | Possible error returns: -EBUSY if someone else has claimed | |
43 | the stream or 0 on success. */ | |
269c11fb | 44 | int ivtv_claim_stream(struct ivtv_open_id *id, int type) |
1a0adaf3 HV |
45 | { |
46 | struct ivtv *itv = id->itv; | |
47 | struct ivtv_stream *s = &itv->streams[type]; | |
48 | struct ivtv_stream *s_vbi; | |
49 | int vbi_type; | |
50 | ||
51 | if (test_and_set_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
52 | /* someone already claimed this stream */ | |
61bb725e | 53 | if (s->fh == &id->fh) { |
1a0adaf3 HV |
54 | /* yes, this file descriptor did. So that's OK. */ |
55 | return 0; | |
56 | } | |
61bb725e | 57 | if (s->fh == NULL && (type == IVTV_DEC_STREAM_TYPE_VBI || |
1a0adaf3 HV |
58 | type == IVTV_ENC_STREAM_TYPE_VBI)) { |
59 | /* VBI is handled already internally, now also assign | |
60 | the file descriptor to this stream for external | |
61 | reading of the stream. */ | |
61bb725e | 62 | s->fh = &id->fh; |
1a0adaf3 HV |
63 | IVTV_DEBUG_INFO("Start Read VBI\n"); |
64 | return 0; | |
65 | } | |
66 | /* someone else is using this stream already */ | |
67 | IVTV_DEBUG_INFO("Stream %d is busy\n", type); | |
68 | return -EBUSY; | |
69 | } | |
61bb725e | 70 | s->fh = &id->fh; |
1a0adaf3 HV |
71 | if (type == IVTV_DEC_STREAM_TYPE_VBI) { |
72 | /* Enable reinsertion interrupt */ | |
73 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
74 | } | |
75 | ||
76 | /* IVTV_DEC_STREAM_TYPE_MPG needs to claim IVTV_DEC_STREAM_TYPE_VBI, | |
77 | IVTV_ENC_STREAM_TYPE_MPG needs to claim IVTV_ENC_STREAM_TYPE_VBI | |
78 | (provided VBI insertion is on and sliced VBI is selected), for all | |
79 | other streams we're done */ | |
80 | if (type == IVTV_DEC_STREAM_TYPE_MPG) { | |
81 | vbi_type = IVTV_DEC_STREAM_TYPE_VBI; | |
82 | } else if (type == IVTV_ENC_STREAM_TYPE_MPG && | |
a8b86435 | 83 | itv->vbi.insert_mpeg && !ivtv_raw_vbi(itv)) { |
1a0adaf3 HV |
84 | vbi_type = IVTV_ENC_STREAM_TYPE_VBI; |
85 | } else { | |
86 | return 0; | |
87 | } | |
88 | s_vbi = &itv->streams[vbi_type]; | |
89 | ||
90 | if (!test_and_set_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags)) { | |
91 | /* Enable reinsertion interrupt */ | |
92 | if (vbi_type == IVTV_DEC_STREAM_TYPE_VBI) | |
93 | ivtv_clear_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
94 | } | |
95 | /* mark that it is used internally */ | |
96 | set_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags); | |
97 | return 0; | |
98 | } | |
269c11fb | 99 | EXPORT_SYMBOL(ivtv_claim_stream); |
1a0adaf3 HV |
100 | |
101 | /* This function releases a previously claimed stream. It will take into | |
102 | account associated VBI streams. */ | |
103 | void ivtv_release_stream(struct ivtv_stream *s) | |
104 | { | |
105 | struct ivtv *itv = s->itv; | |
106 | struct ivtv_stream *s_vbi; | |
107 | ||
61bb725e | 108 | s->fh = NULL; |
1a0adaf3 HV |
109 | if ((s->type == IVTV_DEC_STREAM_TYPE_VBI || s->type == IVTV_ENC_STREAM_TYPE_VBI) && |
110 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
111 | /* this stream is still in use internally */ | |
112 | return; | |
113 | } | |
114 | if (!test_and_clear_bit(IVTV_F_S_CLAIMED, &s->s_flags)) { | |
115 | IVTV_DEBUG_WARN("Release stream %s not in use!\n", s->name); | |
116 | return; | |
117 | } | |
118 | ||
119 | ivtv_flush_queues(s); | |
120 | ||
121 | /* disable reinsertion interrupt */ | |
122 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) | |
123 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
124 | ||
125 | /* IVTV_DEC_STREAM_TYPE_MPG needs to release IVTV_DEC_STREAM_TYPE_VBI, | |
126 | IVTV_ENC_STREAM_TYPE_MPG needs to release IVTV_ENC_STREAM_TYPE_VBI, | |
127 | for all other streams we're done */ | |
128 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
129 | s_vbi = &itv->streams[IVTV_DEC_STREAM_TYPE_VBI]; | |
130 | else if (s->type == IVTV_ENC_STREAM_TYPE_MPG) | |
131 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
132 | else | |
133 | return; | |
134 | ||
135 | /* clear internal use flag */ | |
136 | if (!test_and_clear_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags)) { | |
137 | /* was already cleared */ | |
138 | return; | |
139 | } | |
61bb725e | 140 | if (s_vbi->fh) { |
1a0adaf3 HV |
141 | /* VBI stream still claimed by a file descriptor */ |
142 | return; | |
143 | } | |
144 | /* disable reinsertion interrupt */ | |
145 | if (s_vbi->type == IVTV_DEC_STREAM_TYPE_VBI) | |
146 | ivtv_set_irq_mask(itv, IVTV_IRQ_DEC_VBI_RE_INSERT); | |
147 | clear_bit(IVTV_F_S_CLAIMED, &s_vbi->s_flags); | |
148 | ivtv_flush_queues(s_vbi); | |
149 | } | |
269c11fb | 150 | EXPORT_SYMBOL(ivtv_release_stream); |
1a0adaf3 HV |
151 | |
152 | static void ivtv_dualwatch(struct ivtv *itv) | |
153 | { | |
154 | struct v4l2_tuner vt; | |
0d82fe80 | 155 | u32 new_stereo_mode; |
f7b80e69 | 156 | const u32 dual = 0x02; |
1a0adaf3 | 157 | |
f7b80e69 | 158 | new_stereo_mode = v4l2_ctrl_g_ctrl(itv->cxhdl.audio_mode); |
1a0adaf3 | 159 | memset(&vt, 0, sizeof(vt)); |
67ec09fd | 160 | ivtv_call_all(itv, tuner, g_tuner, &vt); |
1a0adaf3 HV |
161 | if (vt.audmode == V4L2_TUNER_MODE_LANG1_LANG2 && (vt.rxsubchans & V4L2_TUNER_SUB_LANG2)) |
162 | new_stereo_mode = dual; | |
163 | ||
164 | if (new_stereo_mode == itv->dualwatch_stereo_mode) | |
165 | return; | |
166 | ||
f7b80e69 HV |
167 | IVTV_DEBUG_INFO("dualwatch: change stereo flag from 0x%x to 0x%x.\n", |
168 | itv->dualwatch_stereo_mode, new_stereo_mode); | |
169 | if (v4l2_ctrl_s_ctrl(itv->cxhdl.audio_mode, new_stereo_mode)) | |
170 | IVTV_DEBUG_INFO("dualwatch: changing stereo flag failed\n"); | |
1a0adaf3 HV |
171 | } |
172 | ||
173 | static void ivtv_update_pgm_info(struct ivtv *itv) | |
174 | { | |
175 | u32 wr_idx = (read_enc(itv->pgm_info_offset) - itv->pgm_info_offset - 4) / 24; | |
176 | int cnt; | |
177 | int i = 0; | |
178 | ||
179 | if (wr_idx >= itv->pgm_info_num) { | |
180 | IVTV_DEBUG_WARN("Invalid PGM index %d (>= %d)\n", wr_idx, itv->pgm_info_num); | |
181 | return; | |
182 | } | |
183 | cnt = (wr_idx + itv->pgm_info_num - itv->pgm_info_write_idx) % itv->pgm_info_num; | |
184 | while (i < cnt) { | |
185 | int idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
186 | struct v4l2_enc_idx_entry *e = itv->pgm_info + idx; | |
187 | u32 addr = itv->pgm_info_offset + 4 + idx * 24; | |
5614b021 HV |
188 | const int mapping[8] = { -1, V4L2_ENC_IDX_FRAME_I, V4L2_ENC_IDX_FRAME_P, -1, |
189 | V4L2_ENC_IDX_FRAME_B, -1, -1, -1 }; | |
190 | // 1=I, 2=P, 4=B | |
1a0adaf3 HV |
191 | |
192 | e->offset = read_enc(addr + 4) + ((u64)read_enc(addr + 8) << 32); | |
193 | if (e->offset > itv->mpg_data_received) { | |
194 | break; | |
195 | } | |
196 | e->offset += itv->vbi_data_inserted; | |
197 | e->length = read_enc(addr); | |
198 | e->pts = read_enc(addr + 16) + ((u64)(read_enc(addr + 20) & 1) << 32); | |
5614b021 | 199 | e->flags = mapping[read_enc(addr + 12) & 7]; |
1a0adaf3 HV |
200 | i++; |
201 | } | |
202 | itv->pgm_info_write_idx = (itv->pgm_info_write_idx + i) % itv->pgm_info_num; | |
203 | } | |
204 | ||
205 | static struct ivtv_buffer *ivtv_get_buffer(struct ivtv_stream *s, int non_block, int *err) | |
206 | { | |
207 | struct ivtv *itv = s->itv; | |
208 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
209 | struct ivtv_buffer *buf; | |
210 | DEFINE_WAIT(wait); | |
211 | ||
212 | *err = 0; | |
213 | while (1) { | |
214 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) { | |
215 | /* Process pending program info updates and pending VBI data */ | |
216 | ivtv_update_pgm_info(itv); | |
217 | ||
168c626c JL |
218 | if (time_after(jiffies, |
219 | itv->dualwatch_jiffies + | |
220 | msecs_to_jiffies(1000))) { | |
1a0adaf3 HV |
221 | itv->dualwatch_jiffies = jiffies; |
222 | ivtv_dualwatch(itv); | |
223 | } | |
224 | ||
225 | if (test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
226 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
227 | while ((buf = ivtv_dequeue(s_vbi, &s_vbi->q_full))) { | |
228 | /* byteswap and process VBI data */ | |
229 | ivtv_process_vbi_data(itv, buf, s_vbi->dma_pts, s_vbi->type); | |
230 | ivtv_enqueue(s_vbi, buf, &s_vbi->q_free); | |
231 | } | |
232 | } | |
233 | buf = &itv->vbi.sliced_mpeg_buf; | |
234 | if (buf->readpos != buf->bytesused) { | |
235 | return buf; | |
236 | } | |
237 | } | |
238 | ||
239 | /* do we have leftover data? */ | |
240 | buf = ivtv_dequeue(s, &s->q_io); | |
241 | if (buf) | |
242 | return buf; | |
243 | ||
244 | /* do we have new data? */ | |
245 | buf = ivtv_dequeue(s, &s->q_full); | |
246 | if (buf) { | |
f4071b85 | 247 | if ((buf->b_flags & IVTV_F_B_NEED_BUF_SWAP) == 0) |
1a0adaf3 | 248 | return buf; |
f4071b85 | 249 | buf->b_flags &= ~IVTV_F_B_NEED_BUF_SWAP; |
1a0adaf3 HV |
250 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG) |
251 | /* byteswap MPG data */ | |
252 | ivtv_buf_swap(buf); | |
253 | else if (s->type != IVTV_DEC_STREAM_TYPE_VBI) { | |
254 | /* byteswap and process VBI data */ | |
255 | ivtv_process_vbi_data(itv, buf, s->dma_pts, s->type); | |
256 | } | |
257 | return buf; | |
258 | } | |
1a0adaf3 HV |
259 | |
260 | /* return if end of stream */ | |
261 | if (s->type != IVTV_DEC_STREAM_TYPE_VBI && !test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
1a0adaf3 HV |
262 | IVTV_DEBUG_INFO("EOS %s\n", s->name); |
263 | return NULL; | |
264 | } | |
265 | ||
559e196a HV |
266 | /* return if file was opened with O_NONBLOCK */ |
267 | if (non_block) { | |
268 | *err = -EAGAIN; | |
269 | return NULL; | |
270 | } | |
271 | ||
1a0adaf3 | 272 | /* wait for more data to arrive */ |
cdc03781 | 273 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
274 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); |
275 | /* New buffers might have become available before we were added to the waitqueue */ | |
276 | if (!s->q_full.buffers) | |
277 | schedule(); | |
278 | finish_wait(&s->waitq, &wait); | |
cdc03781 | 279 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
280 | if (signal_pending(current)) { |
281 | /* return if a signal was received */ | |
282 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
283 | *err = -EINTR; | |
284 | return NULL; | |
285 | } | |
286 | } | |
287 | } | |
288 | ||
289 | static void ivtv_setup_sliced_vbi_buf(struct ivtv *itv) | |
290 | { | |
291 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
292 | ||
293 | itv->vbi.sliced_mpeg_buf.buf = itv->vbi.sliced_mpeg_data[idx]; | |
294 | itv->vbi.sliced_mpeg_buf.bytesused = itv->vbi.sliced_mpeg_size[idx]; | |
295 | itv->vbi.sliced_mpeg_buf.readpos = 0; | |
296 | } | |
297 | ||
298 | static size_t ivtv_copy_buf_to_user(struct ivtv_stream *s, struct ivtv_buffer *buf, | |
299 | char __user *ubuf, size_t ucount) | |
300 | { | |
301 | struct ivtv *itv = s->itv; | |
302 | size_t len = buf->bytesused - buf->readpos; | |
303 | ||
304 | if (len > ucount) len = ucount; | |
305 | if (itv->vbi.insert_mpeg && s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
a8b86435 | 306 | !ivtv_raw_vbi(itv) && buf != &itv->vbi.sliced_mpeg_buf) { |
1a0adaf3 HV |
307 | const char *start = buf->buf + buf->readpos; |
308 | const char *p = start + 1; | |
309 | const u8 *q; | |
310 | u8 ch = itv->search_pack_header ? 0xba : 0xe0; | |
311 | int stuffing, i; | |
312 | ||
313 | while (start + len > p && (q = memchr(p, 0, start + len - p))) { | |
314 | p = q + 1; | |
315 | if ((char *)q + 15 >= buf->buf + buf->bytesused || | |
316 | q[1] != 0 || q[2] != 1 || q[3] != ch) { | |
317 | continue; | |
318 | } | |
319 | if (!itv->search_pack_header) { | |
320 | if ((q[6] & 0xc0) != 0x80) | |
321 | continue; | |
322 | if (((q[7] & 0xc0) == 0x80 && (q[9] & 0xf0) == 0x20) || | |
323 | ((q[7] & 0xc0) == 0xc0 && (q[9] & 0xf0) == 0x30)) { | |
324 | ch = 0xba; | |
325 | itv->search_pack_header = 1; | |
326 | p = q + 9; | |
327 | } | |
328 | continue; | |
329 | } | |
330 | stuffing = q[13] & 7; | |
331 | /* all stuffing bytes must be 0xff */ | |
332 | for (i = 0; i < stuffing; i++) | |
333 | if (q[14 + i] != 0xff) | |
334 | break; | |
335 | if (i == stuffing && (q[4] & 0xc4) == 0x44 && (q[12] & 3) == 3 && | |
336 | q[14 + stuffing] == 0 && q[15 + stuffing] == 0 && | |
337 | q[16 + stuffing] == 1) { | |
338 | itv->search_pack_header = 0; | |
339 | len = (char *)q - start; | |
340 | ivtv_setup_sliced_vbi_buf(itv); | |
341 | break; | |
342 | } | |
343 | } | |
344 | } | |
345 | if (copy_to_user(ubuf, (u8 *)buf->buf + buf->readpos, len)) { | |
346 | IVTV_DEBUG_WARN("copy %zd bytes to user failed for %s\n", len, s->name); | |
347 | return -EFAULT; | |
348 | } | |
349 | /*IVTV_INFO("copied %lld %d %d %d %d %d vbi %d\n", itv->mpg_data_received, len, ucount, | |
350 | buf->readpos, buf->bytesused, buf->bytesused - buf->readpos - len, | |
351 | buf == &itv->vbi.sliced_mpeg_buf); */ | |
352 | buf->readpos += len; | |
353 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && buf != &itv->vbi.sliced_mpeg_buf) | |
354 | itv->mpg_data_received += len; | |
355 | return len; | |
356 | } | |
357 | ||
358 | static ssize_t ivtv_read(struct ivtv_stream *s, char __user *ubuf, size_t tot_count, int non_block) | |
359 | { | |
360 | struct ivtv *itv = s->itv; | |
361 | size_t tot_written = 0; | |
362 | int single_frame = 0; | |
363 | ||
61bb725e | 364 | if (atomic_read(&itv->capturing) == 0 && s->fh == NULL) { |
1a0adaf3 HV |
365 | /* shouldn't happen */ |
366 | IVTV_DEBUG_WARN("Stream %s not initialized before read\n", s->name); | |
367 | return -EIO; | |
368 | } | |
369 | ||
370 | /* Each VBI buffer is one frame, the v4l2 API says that for VBI the frames should | |
371 | arrive one-by-one, so make sure we never output more than one VBI frame at a time */ | |
372 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI || | |
a8b86435 | 373 | (s->type == IVTV_ENC_STREAM_TYPE_VBI && !ivtv_raw_vbi(itv))) |
1a0adaf3 HV |
374 | single_frame = 1; |
375 | ||
376 | for (;;) { | |
377 | struct ivtv_buffer *buf; | |
378 | int rc; | |
379 | ||
380 | buf = ivtv_get_buffer(s, non_block, &rc); | |
559e196a HV |
381 | /* if there is no data available... */ |
382 | if (buf == NULL) { | |
383 | /* if we got data, then return that regardless */ | |
384 | if (tot_written) | |
385 | break; | |
386 | /* EOS condition */ | |
387 | if (rc == 0) { | |
388 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
389 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
390 | ivtv_release_stream(s); | |
391 | } | |
392 | /* set errno */ | |
1a0adaf3 | 393 | return rc; |
559e196a | 394 | } |
1a0adaf3 HV |
395 | rc = ivtv_copy_buf_to_user(s, buf, ubuf + tot_written, tot_count - tot_written); |
396 | if (buf != &itv->vbi.sliced_mpeg_buf) { | |
397 | ivtv_enqueue(s, buf, (buf->readpos == buf->bytesused) ? &s->q_free : &s->q_io); | |
398 | } | |
399 | else if (buf->readpos == buf->bytesused) { | |
400 | int idx = itv->vbi.inserted_frame % IVTV_VBI_FRAMES; | |
401 | itv->vbi.sliced_mpeg_size[idx] = 0; | |
402 | itv->vbi.inserted_frame++; | |
403 | itv->vbi_data_inserted += buf->bytesused; | |
404 | } | |
405 | if (rc < 0) | |
406 | return rc; | |
407 | tot_written += rc; | |
408 | ||
409 | if (tot_written == tot_count || single_frame) | |
410 | break; | |
411 | } | |
412 | return tot_written; | |
413 | } | |
414 | ||
415 | static ssize_t ivtv_read_pos(struct ivtv_stream *s, char __user *ubuf, size_t count, | |
416 | loff_t *pos, int non_block) | |
417 | { | |
418 | ssize_t rc = count ? ivtv_read(s, ubuf, count, non_block) : 0; | |
419 | struct ivtv *itv = s->itv; | |
420 | ||
1aa32c2f | 421 | IVTV_DEBUG_HI_FILE("read %zd from %s, got %zd\n", count, s->name, rc); |
1a0adaf3 HV |
422 | if (rc > 0) |
423 | pos += rc; | |
424 | return rc; | |
425 | } | |
426 | ||
427 | int ivtv_start_capture(struct ivtv_open_id *id) | |
428 | { | |
429 | struct ivtv *itv = id->itv; | |
430 | struct ivtv_stream *s = &itv->streams[id->type]; | |
431 | struct ivtv_stream *s_vbi; | |
432 | ||
433 | if (s->type == IVTV_ENC_STREAM_TYPE_RAD || | |
434 | s->type == IVTV_DEC_STREAM_TYPE_MPG || | |
435 | s->type == IVTV_DEC_STREAM_TYPE_YUV || | |
436 | s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
437 | /* you cannot read from these stream types. */ | |
7eaf4966 | 438 | return -EINVAL; |
1a0adaf3 HV |
439 | } |
440 | ||
441 | /* Try to claim this stream. */ | |
442 | if (ivtv_claim_stream(id, s->type)) | |
443 | return -EBUSY; | |
444 | ||
445 | /* This stream does not need to start capturing */ | |
446 | if (s->type == IVTV_DEC_STREAM_TYPE_VBI) { | |
447 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
448 | return 0; | |
449 | } | |
450 | ||
451 | /* If capture is already in progress, then we also have to | |
452 | do nothing extra. */ | |
453 | if (test_bit(IVTV_F_S_STREAMOFF, &s->s_flags) || test_and_set_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
454 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
455 | return 0; | |
456 | } | |
457 | ||
458 | /* Start VBI capture if required */ | |
459 | s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
460 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
461 | test_bit(IVTV_F_S_INTERNAL_USE, &s_vbi->s_flags) && | |
462 | !test_and_set_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
463 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is claimed | |
464 | automatically when the MPG stream is claimed. | |
465 | We only need to start the VBI capturing. */ | |
466 | if (ivtv_start_v4l2_encode_stream(s_vbi)) { | |
467 | IVTV_DEBUG_WARN("VBI capture start failed\n"); | |
468 | ||
469 | /* Failure, clean up and return an error */ | |
470 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
471 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
472 | /* also releases the associated VBI stream */ | |
473 | ivtv_release_stream(s); | |
474 | return -EIO; | |
475 | } | |
476 | IVTV_DEBUG_INFO("VBI insertion started\n"); | |
477 | } | |
478 | ||
479 | /* Tell the card to start capturing */ | |
480 | if (!ivtv_start_v4l2_encode_stream(s)) { | |
481 | /* We're done */ | |
482 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
483 | /* Resume a possibly paused encoder */ | |
484 | if (test_and_clear_bit(IVTV_F_I_ENC_PAUSED, &itv->i_flags)) | |
485 | ivtv_vapi(itv, CX2341X_ENC_PAUSE_ENCODER, 1, 1); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | /* failure, clean up */ | |
490 | IVTV_DEBUG_WARN("Failed to start capturing for stream %s\n", s->name); | |
491 | ||
492 | /* Note: the IVTV_ENC_STREAM_TYPE_VBI is released | |
493 | automatically when the MPG stream is released. | |
494 | We only need to stop the VBI capturing. */ | |
495 | if (s->type == IVTV_ENC_STREAM_TYPE_MPG && | |
496 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags)) { | |
497 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
498 | clear_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags); | |
499 | } | |
500 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
501 | ivtv_release_stream(s); | |
502 | return -EIO; | |
503 | } | |
504 | ||
505 | ssize_t ivtv_v4l2_read(struct file * filp, char __user *buf, size_t count, loff_t * pos) | |
506 | { | |
09250193 | 507 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
508 | struct ivtv *itv = id->itv; |
509 | struct ivtv_stream *s = &itv->streams[id->type]; | |
85397ef6 | 510 | ssize_t rc; |
1a0adaf3 | 511 | |
1aa32c2f | 512 | IVTV_DEBUG_HI_FILE("read %zd bytes from %s\n", count, s->name); |
1a0adaf3 | 513 | |
85397ef6 HV |
514 | if (mutex_lock_interruptible(&itv->serialize_lock)) |
515 | return -ERESTARTSYS; | |
1a0adaf3 | 516 | rc = ivtv_start_capture(id); |
85397ef6 HV |
517 | if (!rc) |
518 | rc = ivtv_read_pos(s, buf, count, pos, filp->f_flags & O_NONBLOCK); | |
519 | mutex_unlock(&itv->serialize_lock); | |
520 | return rc; | |
1a0adaf3 HV |
521 | } |
522 | ||
523 | int ivtv_start_decoding(struct ivtv_open_id *id, int speed) | |
524 | { | |
525 | struct ivtv *itv = id->itv; | |
526 | struct ivtv_stream *s = &itv->streams[id->type]; | |
914610e8 | 527 | int rc; |
1a0adaf3 HV |
528 | |
529 | if (atomic_read(&itv->decoding) == 0) { | |
530 | if (ivtv_claim_stream(id, s->type)) { | |
531 | /* someone else is using this stream already */ | |
532 | IVTV_DEBUG_WARN("start decode, stream already claimed\n"); | |
533 | return -EBUSY; | |
534 | } | |
914610e8 | 535 | rc = ivtv_start_v4l2_decode_stream(s, 0); |
215659d1 IA |
536 | if (rc < 0) { |
537 | if (rc == -EAGAIN) | |
538 | rc = ivtv_start_v4l2_decode_stream(s, 0); | |
539 | if (rc < 0) | |
540 | return rc; | |
541 | } | |
1a0adaf3 HV |
542 | } |
543 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
544 | return ivtv_set_speed(itv, speed); | |
545 | return 0; | |
546 | } | |
547 | ||
85397ef6 | 548 | static ssize_t ivtv_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *pos) |
1a0adaf3 | 549 | { |
09250193 | 550 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
551 | struct ivtv *itv = id->itv; |
552 | struct ivtv_stream *s = &itv->streams[id->type]; | |
c240ad00 | 553 | struct yuv_playback_info *yi = &itv->yuv_info; |
1a0adaf3 HV |
554 | struct ivtv_buffer *buf; |
555 | struct ivtv_queue q; | |
556 | int bytes_written = 0; | |
557 | int mode; | |
558 | int rc; | |
559 | DEFINE_WAIT(wait); | |
560 | ||
1aa32c2f | 561 | IVTV_DEBUG_HI_FILE("write %zd bytes to %s\n", count, s->name); |
1a0adaf3 HV |
562 | |
563 | if (s->type != IVTV_DEC_STREAM_TYPE_MPG && | |
564 | s->type != IVTV_DEC_STREAM_TYPE_YUV && | |
565 | s->type != IVTV_DEC_STREAM_TYPE_VOUT) | |
566 | /* not decoder streams */ | |
7eaf4966 | 567 | return -EINVAL; |
1a0adaf3 HV |
568 | |
569 | /* Try to claim this stream */ | |
570 | if (ivtv_claim_stream(id, s->type)) | |
571 | return -EBUSY; | |
572 | ||
573 | /* This stream does not need to start any decoding */ | |
574 | if (s->type == IVTV_DEC_STREAM_TYPE_VOUT) { | |
2f3a9893 HV |
575 | int elems = count / sizeof(struct v4l2_sliced_vbi_data); |
576 | ||
1a0adaf3 | 577 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); |
ddda4249 | 578 | return ivtv_write_vbi_from_user(itv, |
b0c45686 | 579 | (const struct v4l2_sliced_vbi_data __user *)user_buf, elems); |
1a0adaf3 HV |
580 | } |
581 | ||
582 | mode = s->type == IVTV_DEC_STREAM_TYPE_MPG ? OUT_MPG : OUT_YUV; | |
583 | ||
584 | if (ivtv_set_output_mode(itv, mode) != mode) { | |
585 | ivtv_release_stream(s); | |
586 | return -EBUSY; | |
587 | } | |
588 | ivtv_queue_init(&q); | |
589 | set_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
590 | ||
464e9f3a | 591 | /* Start decoder (returns 0 if already started) */ |
464e9f3a | 592 | rc = ivtv_start_decoding(id, itv->speed); |
464e9f3a IA |
593 | if (rc) { |
594 | IVTV_DEBUG_WARN("Failed start decode stream %s\n", s->name); | |
595 | ||
596 | /* failure, clean up */ | |
597 | clear_bit(IVTV_F_S_STREAMING, &s->s_flags); | |
598 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
599 | return rc; | |
600 | } | |
601 | ||
1a0adaf3 | 602 | retry: |
77aded6b IA |
603 | /* If possible, just DMA the entire frame - Check the data transfer size |
604 | since we may get here before the stream has been fully set-up */ | |
605 | if (mode == OUT_YUV && s->q_full.length == 0 && itv->dma_data_req_size) { | |
606 | while (count >= itv->dma_data_req_size) { | |
2e668962 IA |
607 | rc = ivtv_yuv_udma_stream_frame(itv, (void __user *)user_buf); |
608 | ||
609 | if (rc < 0) | |
610 | return rc; | |
611 | ||
612 | bytes_written += itv->dma_data_req_size; | |
613 | user_buf += itv->dma_data_req_size; | |
614 | count -= itv->dma_data_req_size; | |
77aded6b IA |
615 | } |
616 | if (count == 0) { | |
617 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); | |
618 | return bytes_written; | |
619 | } | |
620 | } | |
621 | ||
1a0adaf3 HV |
622 | for (;;) { |
623 | /* Gather buffers */ | |
624 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_io))) | |
625 | ivtv_enqueue(s, buf, &q); | |
626 | while (q.length - q.bytesused < count && (buf = ivtv_dequeue(s, &s->q_free))) { | |
627 | ivtv_enqueue(s, buf, &q); | |
628 | } | |
629 | if (q.buffers) | |
630 | break; | |
631 | if (filp->f_flags & O_NONBLOCK) | |
632 | return -EAGAIN; | |
cdc03781 | 633 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
634 | prepare_to_wait(&s->waitq, &wait, TASK_INTERRUPTIBLE); |
635 | /* New buffers might have become free before we were added to the waitqueue */ | |
636 | if (!s->q_free.buffers) | |
637 | schedule(); | |
638 | finish_wait(&s->waitq, &wait); | |
cdc03781 | 639 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
640 | if (signal_pending(current)) { |
641 | IVTV_DEBUG_INFO("User stopped %s\n", s->name); | |
642 | return -EINTR; | |
643 | } | |
644 | } | |
645 | ||
646 | /* copy user data into buffers */ | |
647 | while ((buf = ivtv_dequeue(s, &q))) { | |
c240ad00 IA |
648 | /* yuv is a pain. Don't copy more data than needed for a single |
649 | frame, otherwise we lose sync with the incoming stream */ | |
650 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && | |
651 | yi->stream_size + count > itv->dma_data_req_size) | |
652 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, | |
653 | itv->dma_data_req_size - yi->stream_size); | |
654 | else | |
655 | rc = ivtv_buf_copy_from_user(s, buf, user_buf, count); | |
1a0adaf3 | 656 | |
c240ad00 | 657 | /* Make sure we really got all the user data */ |
1a0adaf3 HV |
658 | if (rc < 0) { |
659 | ivtv_queue_move(s, &q, NULL, &s->q_free, 0); | |
660 | return rc; | |
661 | } | |
662 | user_buf += rc; | |
663 | count -= rc; | |
664 | bytes_written += rc; | |
665 | ||
c240ad00 IA |
666 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
667 | yi->stream_size += rc; | |
668 | /* If we have a complete yuv frame, break loop now */ | |
669 | if (yi->stream_size == itv->dma_data_req_size) { | |
670 | ivtv_enqueue(s, buf, &s->q_full); | |
671 | yi->stream_size = 0; | |
672 | break; | |
673 | } | |
674 | } | |
675 | ||
1a0adaf3 HV |
676 | if (buf->bytesused != s->buf_size) { |
677 | /* incomplete, leave in q_io for next time */ | |
678 | ivtv_enqueue(s, buf, &s->q_io); | |
679 | break; | |
680 | } | |
681 | /* Byteswap MPEG buffer */ | |
682 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) | |
683 | ivtv_buf_swap(buf); | |
684 | ivtv_enqueue(s, buf, &s->q_full); | |
685 | } | |
686 | ||
1a0adaf3 HV |
687 | if (test_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags)) { |
688 | if (s->q_full.length >= itv->dma_data_req_size) { | |
689 | int got_sig; | |
690 | ||
77aded6b IA |
691 | if (mode == OUT_YUV) |
692 | ivtv_yuv_setup_stream_frame(itv); | |
693 | ||
cdc03781 | 694 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
695 | prepare_to_wait(&itv->dma_waitq, &wait, TASK_INTERRUPTIBLE); |
696 | while (!(got_sig = signal_pending(current)) && | |
697 | test_bit(IVTV_F_S_DMA_PENDING, &s->s_flags)) { | |
698 | schedule(); | |
699 | } | |
700 | finish_wait(&itv->dma_waitq, &wait); | |
cdc03781 | 701 | mutex_lock(&itv->serialize_lock); |
1a0adaf3 HV |
702 | if (got_sig) { |
703 | IVTV_DEBUG_INFO("User interrupted %s\n", s->name); | |
704 | return -EINTR; | |
705 | } | |
706 | ||
707 | clear_bit(IVTV_F_S_NEEDS_DATA, &s->s_flags); | |
708 | ivtv_queue_move(s, &s->q_full, NULL, &s->q_predma, itv->dma_data_req_size); | |
709 | ivtv_dma_stream_dec_prepare(s, itv->dma_data_req_offset + IVTV_DECODER_OFFSET, 1); | |
710 | } | |
711 | } | |
712 | /* more user data is available, wait until buffers become free | |
713 | to transfer the rest. */ | |
714 | if (count && !(filp->f_flags & O_NONBLOCK)) | |
715 | goto retry; | |
1aa32c2f | 716 | IVTV_DEBUG_HI_FILE("Wrote %d bytes to %s (%d)\n", bytes_written, s->name, s->q_full.bytesused); |
1a0adaf3 HV |
717 | return bytes_written; |
718 | } | |
719 | ||
85397ef6 HV |
720 | ssize_t ivtv_v4l2_write(struct file *filp, const char __user *user_buf, size_t count, loff_t *pos) |
721 | { | |
722 | struct ivtv_open_id *id = fh2id(filp->private_data); | |
723 | struct ivtv *itv = id->itv; | |
724 | ssize_t res; | |
725 | ||
726 | if (mutex_lock_interruptible(&itv->serialize_lock)) | |
727 | return -ERESTARTSYS; | |
728 | res = ivtv_write(filp, user_buf, count, pos); | |
729 | mutex_unlock(&itv->serialize_lock); | |
730 | return res; | |
731 | } | |
732 | ||
c23e0cb8 | 733 | __poll_t ivtv_v4l2_dec_poll(struct file *filp, poll_table *wait) |
1a0adaf3 | 734 | { |
09250193 | 735 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
736 | struct ivtv *itv = id->itv; |
737 | struct ivtv_stream *s = &itv->streams[id->type]; | |
c23e0cb8 | 738 | __poll_t res = 0; |
1a0adaf3 HV |
739 | |
740 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 741 | IVTV_DEBUG_HI_FILE("Decoder poll\n"); |
1a0adaf3 | 742 | |
09250193 HV |
743 | /* If there are subscribed events, then only use the new event |
744 | API instead of the old video.h based API. */ | |
523f46d6 HV |
745 | if (!list_empty(&id->fh.subscribed)) { |
746 | poll_wait(filp, &id->fh.wait, wait); | |
09250193 HV |
747 | /* Turn off the old-style vsync events */ |
748 | clear_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags); | |
749 | if (v4l2_event_pending(&id->fh)) | |
a9a08845 | 750 | res = EPOLLPRI; |
09250193 HV |
751 | } else { |
752 | /* This is the old-style API which is here only for backwards | |
753 | compatibility. */ | |
754 | poll_wait(filp, &s->waitq, wait); | |
755 | set_bit(IVTV_F_I_EV_VSYNC_ENABLED, &itv->i_flags); | |
756 | if (test_bit(IVTV_F_I_EV_VSYNC, &itv->i_flags) || | |
757 | test_bit(IVTV_F_I_EV_DEC_STOPPED, &itv->i_flags)) | |
a9a08845 | 758 | res = EPOLLPRI; |
09250193 | 759 | } |
1a0adaf3 HV |
760 | |
761 | /* Allow write if buffers are available for writing */ | |
762 | if (s->q_free.buffers) | |
a9a08845 | 763 | res |= EPOLLOUT | EPOLLWRNORM; |
1a0adaf3 HV |
764 | return res; |
765 | } | |
766 | ||
c23e0cb8 | 767 | __poll_t ivtv_v4l2_enc_poll(struct file *filp, poll_table *wait) |
1a0adaf3 | 768 | { |
01699437 | 769 | __poll_t req_events = poll_requested_events(wait); |
09250193 | 770 | struct ivtv_open_id *id = fh2id(filp->private_data); |
1a0adaf3 HV |
771 | struct ivtv *itv = id->itv; |
772 | struct ivtv_stream *s = &itv->streams[id->type]; | |
773 | int eof = test_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
c23e0cb8 | 774 | __poll_t res = 0; |
1a0adaf3 HV |
775 | |
776 | /* Start a capture if there is none */ | |
d0b66fdf | 777 | if (!eof && !test_bit(IVTV_F_S_STREAMING, &s->s_flags) && |
7eaf4966 | 778 | s->type != IVTV_ENC_STREAM_TYPE_RAD && |
a9a08845 | 779 | (req_events & (EPOLLIN | EPOLLRDNORM))) { |
baa4072d | 780 | int rc; |
1a0adaf3 | 781 | |
85397ef6 | 782 | mutex_lock(&itv->serialize_lock); |
baa4072d | 783 | rc = ivtv_start_capture(id); |
85397ef6 | 784 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
785 | if (rc) { |
786 | IVTV_DEBUG_INFO("Could not start capture for %s (%d)\n", | |
787 | s->name, rc); | |
a9a08845 | 788 | return EPOLLERR; |
1a0adaf3 | 789 | } |
1aa32c2f | 790 | IVTV_DEBUG_FILE("Encoder poll started capture\n"); |
1a0adaf3 HV |
791 | } |
792 | ||
793 | /* add stream's waitq to the poll list */ | |
1aa32c2f | 794 | IVTV_DEBUG_HI_FILE("Encoder poll\n"); |
1a0adaf3 | 795 | poll_wait(filp, &s->waitq, wait); |
5138870d | 796 | if (v4l2_event_pending(&id->fh)) |
a9a08845 | 797 | res |= EPOLLPRI; |
5138870d | 798 | else |
523f46d6 | 799 | poll_wait(filp, &id->fh.wait, wait); |
1a0adaf3 | 800 | |
16928be3 | 801 | if (s->q_full.length || s->q_io.length) |
a9a08845 | 802 | return res | EPOLLIN | EPOLLRDNORM; |
16928be3 | 803 | if (eof) |
a9a08845 | 804 | return res | EPOLLHUP; |
5138870d | 805 | return res; |
1a0adaf3 HV |
806 | } |
807 | ||
808 | void ivtv_stop_capture(struct ivtv_open_id *id, int gop_end) | |
809 | { | |
810 | struct ivtv *itv = id->itv; | |
811 | struct ivtv_stream *s = &itv->streams[id->type]; | |
812 | ||
1aa32c2f | 813 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 HV |
814 | |
815 | /* 'Unclaim' this stream */ | |
816 | ||
817 | /* Stop capturing */ | |
818 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
819 | struct ivtv_stream *s_vbi = &itv->streams[IVTV_ENC_STREAM_TYPE_VBI]; | |
820 | ||
821 | IVTV_DEBUG_INFO("close stopping capture\n"); | |
822 | /* Special case: a running VBI capture for VBI insertion | |
823 | in the mpeg stream. Need to stop that too. */ | |
824 | if (id->type == IVTV_ENC_STREAM_TYPE_MPG && | |
825 | test_bit(IVTV_F_S_STREAMING, &s_vbi->s_flags) && | |
826 | !test_bit(IVTV_F_S_APPL_IO, &s_vbi->s_flags)) { | |
827 | IVTV_DEBUG_INFO("close stopping embedded VBI capture\n"); | |
828 | ivtv_stop_v4l2_encode_stream(s_vbi, 0); | |
829 | } | |
830 | if ((id->type == IVTV_DEC_STREAM_TYPE_VBI || | |
831 | id->type == IVTV_ENC_STREAM_TYPE_VBI) && | |
832 | test_bit(IVTV_F_S_INTERNAL_USE, &s->s_flags)) { | |
833 | /* Also used internally, don't stop capturing */ | |
61bb725e | 834 | s->fh = NULL; |
1a0adaf3 HV |
835 | } |
836 | else { | |
837 | ivtv_stop_v4l2_encode_stream(s, gop_end); | |
838 | } | |
839 | } | |
559e196a HV |
840 | if (!gop_end) { |
841 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
842 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
843 | ivtv_release_stream(s); | |
844 | } | |
1a0adaf3 HV |
845 | } |
846 | ||
31ec1356 | 847 | static void ivtv_stop_decoding(struct ivtv_open_id *id, int flags, u64 pts) |
1a0adaf3 HV |
848 | { |
849 | struct ivtv *itv = id->itv; | |
850 | struct ivtv_stream *s = &itv->streams[id->type]; | |
851 | ||
1aa32c2f | 852 | IVTV_DEBUG_FILE("close() of %s\n", s->name); |
1a0adaf3 | 853 | |
666092c6 IA |
854 | if (id->type == IVTV_DEC_STREAM_TYPE_YUV && |
855 | test_bit(IVTV_F_I_DECODING_YUV, &itv->i_flags)) { | |
856 | /* Restore registers we've changed & clean up any mess */ | |
857 | ivtv_yuv_close(itv); | |
858 | } | |
859 | ||
1a0adaf3 HV |
860 | /* Stop decoding */ |
861 | if (test_bit(IVTV_F_S_STREAMING, &s->s_flags)) { | |
862 | IVTV_DEBUG_INFO("close stopping decode\n"); | |
863 | ||
864 | ivtv_stop_v4l2_decode_stream(s, flags, pts); | |
ad8ff0f1 | 865 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
866 | } |
867 | clear_bit(IVTV_F_S_APPL_IO, &s->s_flags); | |
868 | clear_bit(IVTV_F_S_STREAMOFF, &s->s_flags); | |
666092c6 | 869 | |
ad8ff0f1 | 870 | if (itv->output_mode == OUT_UDMA_YUV && id->yuv_frames) |
cb50f548 | 871 | itv->output_mode = OUT_NONE; |
1a0adaf3 HV |
872 | |
873 | itv->speed = 0; | |
ac425144 | 874 | clear_bit(IVTV_F_I_DEC_PAUSED, &itv->i_flags); |
1a0adaf3 HV |
875 | ivtv_release_stream(s); |
876 | } | |
877 | ||
bec43661 | 878 | int ivtv_v4l2_close(struct file *filp) |
1a0adaf3 | 879 | { |
09250193 HV |
880 | struct v4l2_fh *fh = filp->private_data; |
881 | struct ivtv_open_id *id = fh2id(fh); | |
1a0adaf3 HV |
882 | struct ivtv *itv = id->itv; |
883 | struct ivtv_stream *s = &itv->streams[id->type]; | |
884 | ||
1aa32c2f | 885 | IVTV_DEBUG_FILE("close %s\n", s->name); |
1a0adaf3 | 886 | |
85397ef6 HV |
887 | mutex_lock(&itv->serialize_lock); |
888 | ||
3f3edd7c HV |
889 | /* Stop radio */ |
890 | if (id->type == IVTV_ENC_STREAM_TYPE_RAD && | |
891 | v4l2_fh_is_singular_file(filp)) { | |
1a0adaf3 HV |
892 | /* Closing radio device, return to TV mode */ |
893 | ivtv_mute(itv); | |
894 | /* Mark that the radio is no longer in use */ | |
895 | clear_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
896 | /* Switch tuner to TV */ | |
8774bed9 | 897 | ivtv_call_all(itv, video, s_std, itv->std); |
1a0adaf3 HV |
898 | /* Select correct audio input (i.e. TV tuner or Line in) */ |
899 | ivtv_audio_set_io(itv); | |
3ff4ad81 HV |
900 | if (itv->hw_flags & IVTV_HW_SAA711X) { |
901 | ivtv_call_hw(itv, IVTV_HW_SAA711X, video, s_crystal_freq, | |
902 | SAA7115_FREQ_32_11_MHZ, 0); | |
f2100d82 | 903 | } |
2f7362ef HV |
904 | if (atomic_read(&itv->capturing) > 0) { |
905 | /* Undo video mute */ | |
906 | ivtv_vapi(itv, CX2341X_ENC_MUTE_VIDEO, 1, | |
3f3edd7c HV |
907 | v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute) | |
908 | (v4l2_ctrl_g_ctrl(itv->cxhdl.video_mute_yuv) << 8)); | |
2f7362ef | 909 | } |
1a0adaf3 HV |
910 | /* Done! Unmute and continue. */ |
911 | ivtv_unmute(itv); | |
3f3edd7c HV |
912 | } |
913 | ||
914 | v4l2_fh_del(fh); | |
915 | v4l2_fh_exit(fh); | |
916 | ||
917 | /* Easy case first: this stream was never claimed by us */ | |
85397ef6 HV |
918 | if (s->fh != &id->fh) |
919 | goto close_done; | |
3f3edd7c HV |
920 | |
921 | /* 'Unclaim' this stream */ | |
922 | ||
923 | if (s->type >= IVTV_DEC_STREAM_TYPE_MPG) { | |
5a338c38 HV |
924 | struct ivtv_stream *s_vout = &itv->streams[IVTV_DEC_STREAM_TYPE_VOUT]; |
925 | ||
da8ec560 | 926 | ivtv_stop_decoding(id, V4L2_DEC_CMD_STOP_TO_BLACK | V4L2_DEC_CMD_STOP_IMMEDIATELY, 0); |
5a338c38 HV |
927 | |
928 | /* If all output streams are closed, and if the user doesn't have | |
2f3a9893 | 929 | IVTV_DEC_STREAM_TYPE_VOUT open, then disable CC on TV-out. */ |
5a338c38 | 930 | if (itv->output_mode == OUT_NONE && !test_bit(IVTV_F_S_APPL_IO, &s_vout->s_flags)) { |
2f3a9893 HV |
931 | /* disable CC on TV-out */ |
932 | ivtv_disable_cc(itv); | |
5a338c38 | 933 | } |
1a0adaf3 HV |
934 | } else { |
935 | ivtv_stop_capture(id, 0); | |
936 | } | |
85397ef6 | 937 | close_done: |
1a0adaf3 | 938 | kfree(id); |
85397ef6 | 939 | mutex_unlock(&itv->serialize_lock); |
1a0adaf3 HV |
940 | return 0; |
941 | } | |
942 | ||
85397ef6 | 943 | static int ivtv_open(struct file *filp) |
1a0adaf3 | 944 | { |
914610e8 | 945 | struct video_device *vdev = video_devdata(filp); |
cdc03781 | 946 | struct ivtv_stream *s = video_get_drvdata(vdev); |
baa4072d | 947 | struct ivtv *itv = s->itv; |
1a0adaf3 | 948 | struct ivtv_open_id *item; |
09250193 | 949 | int res = 0; |
1a0adaf3 | 950 | |
1aa32c2f | 951 | IVTV_DEBUG_FILE("open %s\n", s->name); |
c976bc82 | 952 | |
cdc03781 HV |
953 | if (ivtv_init_on_first_open(itv)) { |
954 | IVTV_ERR("Failed to initialize on device %s\n", | |
955 | video_device_node_name(vdev)); | |
956 | return -ENXIO; | |
957 | } | |
958 | ||
914610e8 | 959 | #ifdef CONFIG_VIDEO_ADV_DEBUG |
215659d1 | 960 | /* Unless ivtv_fw_debug is set, error out if firmware dead. */ |
914610e8 IA |
961 | if (ivtv_fw_debug) { |
962 | IVTV_WARN("Opening %s with dead firmware lockout disabled\n", | |
963 | video_device_node_name(vdev)); | |
964 | IVTV_WARN("Selected firmware errors will be ignored\n"); | |
215659d1 | 965 | } else { |
914610e8 | 966 | #else |
215659d1 | 967 | if (1) { |
914610e8 | 968 | #endif |
215659d1 IA |
969 | res = ivtv_firmware_check(itv, "ivtv_serialized_open"); |
970 | if (res == -EAGAIN) | |
971 | res = ivtv_firmware_check(itv, "ivtv_serialized_open"); | |
972 | if (res < 0) | |
973 | return -EIO; | |
974 | } | |
914610e8 | 975 | |
baa4072d | 976 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG && |
1a0adaf3 HV |
977 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_YUV].s_flags)) |
978 | return -EBUSY; | |
979 | ||
baa4072d | 980 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV && |
1a0adaf3 HV |
981 | test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_MPG].s_flags)) |
982 | return -EBUSY; | |
983 | ||
baa4072d | 984 | if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 HV |
985 | if (read_reg(0x82c) == 0) { |
986 | IVTV_ERR("Tried to open YUV output device but need to send data to mpeg decoder before it can be used\n"); | |
987 | /* return -ENODEV; */ | |
988 | } | |
989 | ivtv_udma_alloc(itv); | |
990 | } | |
991 | ||
992 | /* Allocate memory */ | |
09250193 | 993 | item = kzalloc(sizeof(struct ivtv_open_id), GFP_KERNEL); |
1a0adaf3 HV |
994 | if (NULL == item) { |
995 | IVTV_DEBUG_WARN("nomem on v4l2 open\n"); | |
996 | return -ENOMEM; | |
997 | } | |
635d62f0 | 998 | v4l2_fh_init(&item->fh, &s->vdev); |
1a0adaf3 | 999 | item->itv = itv; |
baa4072d | 1000 | item->type = s->type; |
1a0adaf3 | 1001 | |
09250193 | 1002 | filp->private_data = &item->fh; |
3f3edd7c | 1003 | v4l2_fh_add(&item->fh); |
1a0adaf3 | 1004 | |
3f3edd7c HV |
1005 | if (item->type == IVTV_ENC_STREAM_TYPE_RAD && |
1006 | v4l2_fh_is_singular_file(filp)) { | |
3562c43b HV |
1007 | if (!test_bit(IVTV_F_I_RADIO_USER, &itv->i_flags)) { |
1008 | if (atomic_read(&itv->capturing) > 0) { | |
1009 | /* switching to radio while capture is | |
1010 | in progress is not polite */ | |
3f3edd7c | 1011 | v4l2_fh_del(&item->fh); |
09250193 | 1012 | v4l2_fh_exit(&item->fh); |
3562c43b HV |
1013 | kfree(item); |
1014 | return -EBUSY; | |
1015 | } | |
1016 | } | |
1017 | /* Mark that the radio is being used. */ | |
1018 | set_bit(IVTV_F_I_RADIO_USER, &itv->i_flags); | |
1a0adaf3 HV |
1019 | /* We have the radio */ |
1020 | ivtv_mute(itv); | |
1021 | /* Switch tuner to radio */ | |
67ec09fd | 1022 | ivtv_call_all(itv, tuner, s_radio); |
1a0adaf3 HV |
1023 | /* Select the correct audio input (i.e. radio tuner) */ |
1024 | ivtv_audio_set_io(itv); | |
67ec09fd | 1025 | if (itv->hw_flags & IVTV_HW_SAA711X) { |
3ff4ad81 HV |
1026 | ivtv_call_hw(itv, IVTV_HW_SAA711X, video, s_crystal_freq, |
1027 | SAA7115_FREQ_32_11_MHZ, SAA7115_FREQ_FL_APLL); | |
f2100d82 | 1028 | } |
1a0adaf3 HV |
1029 | /* Done! Unmute and continue. */ |
1030 | ivtv_unmute(itv); | |
1031 | } | |
1032 | ||
1033 | /* YUV or MPG Decoding Mode? */ | |
c240ad00 | 1034 | if (s->type == IVTV_DEC_STREAM_TYPE_MPG) { |
1a0adaf3 | 1035 | clear_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
c240ad00 | 1036 | } else if (s->type == IVTV_DEC_STREAM_TYPE_YUV) { |
1a0adaf3 | 1037 | set_bit(IVTV_F_I_DEC_YUV, &itv->i_flags); |
c240ad00 IA |
1038 | /* For yuv, we need to know the dma size before we start */ |
1039 | itv->dma_data_req_size = | |
77aded6b | 1040 | 1080 * ((itv->yuv_info.v4l2_src_h + 31) & ~31); |
c240ad00 IA |
1041 | itv->yuv_info.stream_size = 0; |
1042 | } | |
baa4072d HV |
1043 | return 0; |
1044 | } | |
1045 | ||
85397ef6 HV |
1046 | int ivtv_v4l2_open(struct file *filp) |
1047 | { | |
1048 | struct video_device *vdev = video_devdata(filp); | |
1049 | int res; | |
1050 | ||
1051 | if (mutex_lock_interruptible(vdev->lock)) | |
1052 | return -ERESTARTSYS; | |
1053 | res = ivtv_open(filp); | |
1054 | mutex_unlock(vdev->lock); | |
1055 | return res; | |
1056 | } | |
1057 | ||
1a0adaf3 HV |
1058 | void ivtv_mute(struct ivtv *itv) |
1059 | { | |
1a0adaf3 HV |
1060 | if (atomic_read(&itv->capturing)) |
1061 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 1); | |
1a0adaf3 HV |
1062 | IVTV_DEBUG_INFO("Mute\n"); |
1063 | } | |
1064 | ||
1065 | void ivtv_unmute(struct ivtv *itv) | |
1066 | { | |
1a0adaf3 | 1067 | if (atomic_read(&itv->capturing)) { |
3562c43b | 1068 | ivtv_msleep_timeout(100, 0); |
1a0adaf3 HV |
1069 | ivtv_vapi(itv, CX2341X_ENC_MISC, 1, 12); |
1070 | ivtv_vapi(itv, CX2341X_ENC_MUTE_AUDIO, 1, 0); | |
1071 | } | |
1a0adaf3 HV |
1072 | IVTV_DEBUG_INFO("Unmute\n"); |
1073 | } |